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ML193 Gas Furnace

Merit® Series

ML193 Gas Furnace

Economical, high-efficiency gas furnace

Built for high reliability and efficiency, the ML193 keeps your home warm and cozy even on the coldest winter days, while helping you save money every month on your utility bills.


Here are some of the top features of the ML193:

Efficiency rating of 93% AFUE can save you hundreds of dollars each year compared to standard furnaces.

Stainless steel secondary heat exchanger allows the furnace to reach high efficiency levels by capturing additional heat.


Features and Benefits

Energy Efficiency

  • Efficiency rating of 93% AFUE—can save you hundreds of dollars each year, compared to standard furnaces
  • Sealed blower compartment—minimizes losses and maximizes efficiency and comfort. Less than 1% leakage at 1.0" ESP
  • Dual-fuel capability—can be combined with an electric heat pump to enhance comfort and fuel efficiency by alternating between electric and gas heat, optimizing energy use and minimizing heating costs

Home Comfort

  • Stainless steel secondary heat exchanger—allows the furnace to reach high efficiency levels by capturing additional heat
  • Robust blower assembly—exceeds industry standard airflow for even temperatures and improved comfort

Reliable Performance

  • Duralok Plus® heat exchanger—made of patented ArmorTuf™ aluminized steel to ensure high reliability and efficiency
  • SureLight® ignitor—silicon nitride construction for long product life and reliable operation
  • Durable steel cabinet—Made to last, with a resilient and attractive textured-paint finish
  • SureLight integrated control board—ensures full control of furnace operation

Warranty and Specs

Warranty and Specs

  • 20-Year Limited Warranty on heat exchanger
  • 5-Year Limited Warranty on covered components
  • This product may be eligible for valuable 10-Year Limited Extended Warranty coverage.


Rated 4.3 out of 5 by 31 reviewers.
Rated 5 out of 5 by Excellent product! This furnace is doing great in our new home. It is economical and does more than just "get the job done". June 23, 2014
Rated 1 out of 5 by Unit installed on new home, poor motor I am experiencing noise around the motor that only stops when pressure is applied. My HVAC technician attempted to tighten the screws, but that still did not resolve 'train-like' noise. March 17, 2014
Rated 1 out of 5 by Troubles-troubles Issues started within a year of installation, thermostat would change temp on its own, furnace would stop working, no heat even the blower is working. Don't understand why the builder opted for this product February 24, 2014
Rated 3 out of 5 by failure combustion pressure switch erratic operation requiring replacement after 3 months or operation. would not restart at night in a timely manner. did restart after 3 hours. found I cannot trust furnace. so having pressure switch replaced. hope this solves the problem. February 10, 2014
Rated 1 out of 5 by New house - 18 month & failed We've build a new house and this unit was chosen by the builder. It's definitively builder grade as it did leak condensate out of the trap since day one. Now, with only 18 months living in the house and at the beginning of it's 3rd winter the exhaust motor is gone. October 28, 2013
Rated 4 out of 5 by Good price Good price for a high-efficiency gas furnace. Pity it does not qualify for rebates in BC. May 18, 2013
Rated 5 out of 5 by In 25 years our house has never been so comfortable! Our furnace is quiet and we have never been so happy with a product or service. Our new cooling condenser should cut our cooling bill in half! I am actually looking forward to see the electric bill this summer! April 18, 2013
Rated 5 out of 5 by Quiet Running and great features. We purchased the ML 193UH and are very happy with its features and it runs very quiet. We also notice that it does not run as often and as long as our previous furnace and the temperature in the house is very comfortable. April 15, 2013

Recognitions and Certifications

AHRI Certified C Good Housekeeping CSA Certified Canada CSA Design Certified DualFuel HRAI Canada

© 2014 Lennox International Inc.